Mercurial > dovecot > original-hg > dovecot-1.2

comparison src/lib-charset/charset-iconv.c @ 568:f2aa58c2afd0 HEAD

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
SEARCH CHARSET support. Currently we do it through iconv() and only ASCII characters are compared case-insensitively.
author Timo Sirainen <tss@iki.fi>
date Sun, 03 Nov 2002 10:39:43 +0200
parents
children e524da896d92
comparison
equal deleted inserted replaced
567:a59f68334ad6 568:f2aa58c2afd0
1 /* Copyright (C) 2002 Timo Sirainen */
2
3 #include "lib.h"
4
5 #ifdef HAVE_ICONV_H
6
7 #include <iconv.h>
8
9 const char *charset_to_ucase_utf8(const unsigned char *data, size_t *size,
10 const char *charset, int *unknown_charset)
11 {
12 iconv_t cd;
13 char *inbuf, *outbuf, *outpos;
14 size_t inleft, outleft, outsize, pos;
15
16 if (charset == NULL || strcasecmp(charset, "us-ascii") == 0)
17 return str_ucase(t_strdup_noconst(data));
18
19 cd = iconv_open("UTF8", charset);
20 if (cd == (iconv_t)-1) {
21 if (unknown_charset != NULL)
22 *unknown_charset = TRUE;
23 return NULL;
24 }
25
26 if (unknown_charset != NULL)
27 *unknown_charset = FALSE;
28
29 inbuf = (char *) data;
30 inleft = *size;
31
32 outsize = outleft = *size * 2;
33 outbuf = outpos = t_buffer_get(outsize + 1);
34
35 while (iconv(cd, &inbuf, &inleft, &outpos, &outleft) == (size_t)-1) {
36 if (errno != E2BIG) {
37 /* invalid data */
38 iconv_close(cd);
39 return NULL;
40 }
41
42 /* output buffer too small, grow it */
43 pos = outsize - outleft;
44 outsize *= 2;
45 outleft = outsize - pos;
46
47 outbuf = t_buffer_reget(outbuf, outsize + 1);
48 outpos = outbuf + pos;
49 }
50
51 *size = (size_t) (outpos - outbuf);
52 *outpos++ = '\0';
53 t_buffer_alloc(*size + 1);
54
55 /* FIXME: this works only for ASCII */
56 str_ucase(outbuf);
57
58 iconv_close(cd);
59 return outbuf;
60 }
61
62 #endif